diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-11-29 16:19:24 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-12-01 10:26:35 +0000 |
| commit | 257e48f1474a1f5bfa6fcafb12f77a8479063293 (patch) | |
| tree | 72ce8eed41e3beef5e61e055bed722d2f209bbc7 /drivers/gpu/drm/i915/intel_lvds.c | |
| parent | c4e7a4146798ce22c229dd21ed31f59f07c4119e (diff) | |
drm/i915/lvds: Disable panel-fitter on gen4 for 1:1 scale factors
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_lvds.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_lvds.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index 4324a326f98..5b88e145ee7 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -269,14 +269,13 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder, u32 scaled_width = adjusted_mode->hdisplay * mode->vdisplay; u32 scaled_height = mode->hdisplay * adjusted_mode->vdisplay; - pfit_control |= PFIT_ENABLE; /* 965+ is easy, it does everything in hw */ if (scaled_width > scaled_height) - pfit_control |= PFIT_SCALING_PILLAR; + pfit_control |= PFIT_ENABLE | PFIT_SCALING_PILLAR; else if (scaled_width < scaled_height) - pfit_control |= PFIT_SCALING_LETTER; - else - pfit_control |= PFIT_SCALING_AUTO; + pfit_control |= PFIT_ENABLE | PFIT_SCALING_LETTER; + else if (adjusted_mode->hdisplay != mode->hdisplay) + pfit_control |= PFIT_ENABLE | PFIT_SCALING_AUTO; } else { u32 scaled_width = adjusted_mode->hdisplay * mode->vdisplay; u32 scaled_height = mode->hdisplay * adjusted_mode->vdisplay; @@ -323,13 +322,17 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder, * Full scaling, even if it changes the aspect ratio. * Fortunately this is all done for us in hw. */ - pfit_control |= PFIT_ENABLE; - if (INTEL_INFO(dev)->gen >= 4) - pfit_control |= PFIT_SCALING_AUTO; - else - pfit_control |= (VERT_AUTO_SCALE | HORIZ_AUTO_SCALE | - VERT_INTERP_BILINEAR | - HORIZ_INTERP_BILINEAR); + if (mode->vdisplay != adjusted_mode->vdisplay || + mode->hdisplay != adjusted_mode->hdisplay) { + pfit_control |= PFIT_ENABLE; + if (INTEL_INFO(dev)->gen >= 4) + pfit_control |= PFIT_SCALING_AUTO; + else + pfit_control |= (VERT_AUTO_SCALE | + VERT_INTERP_BILINEAR | + HORIZ_AUTO_SCALE | + HORIZ_INTERP_BILINEAR); + } break; default: |